It would be designed to measure attention through watch time, rewatches, and how quickly users stop swiping. Tracking taps, shares, and swipe-away moments would reveal which part of the snap actually holds interest. Drop-offs and replays would act like heatmaps, showing where curiosity rises or fades during the short clip. These signals would help refine storytelling, pacing, and visuals to better match how people naturally consume snaps. Over time, this creates a feedback loop that improves engagement and makes each new snap more effective.